Sill need help with major electrical problem please!!!!

I have a 91 GT and the ignition switch went out on it, so I bought a replacement for it. I change it out in about 5 or 6 mins with no problems, untill I pluged the battery back in. I went to start the ignition not knowing that I had installed the ignition at ACC instead of the off position.....so I go to start the engine and i see a spark fly from the key cylinder, I try to hurry up and unplug to he ignition switch but i couldn't so I jump out and try to unplug the battery but it was to late. I saw smoke coming from under the hood and the dash then heard a faint pop. So i remove the ignition switch and it was toast. So I go to parts store and pick up another switch no big deal only about 11 bucks and install it correctly this time....and i got nothing. No warning lights, cant roll my windows, no stereo, no ac.....no nothing. I checked all the fuses and they are all good. I took everything apart trying to find some relays but everything apears to be good. Its almost like the batt is dead but its not, my headlights, and interior lights work so i dont know.I am almost to the point of taking the dash out and taking the wiring harness apart.....I dont know what to do.....can anyone please help? Thank you for your time and help in advance.:?: